Dizzy spells, sternum pain, nausea, chest tight, tiredness, short of breath at times, wake up in night with choking sensation. Can it be gerd/reflux?

In brief:
Yes

Sometimes pain mimics heart attack. When gastric acid reaches the vocal folds, airways, and lungs, cause swelling of the passages which can lead to atypical asthma reactions. Such airway damage can affect breathing.Dysphagia is choking. Nausea and tightness of chest. See physician to rule out other causes of pain.

In brief:
Yes

Sometimes pain mimics heart attack. When gastric acid reaches the vocal folds, airways, and lungs, cause swelling of the passages which can lead to atypical asthma reactions. Such airway damage can affect breathing.Dysphagia is choking. Nausea and tightness of chest. See physician to rule out other causes of pain.
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